Who is William (Bill) Fraker from Bag of Bones and what is their importance?

William was thirty-eight years old on the day that he hit the 1989 Toyota driven by Mrs. Esther Easterling of Barrett's Orchards. He had been putting down asphalt with three other men on the extension of Harris Avenue near the airport and he was ready for a cold shower and a cold beer. He was also looking forward to the air conditioned F-150 that he had left in the parking lot. The brakes on the dump truck weren't great, and when the Toyota pulled out in front of him .